BUG: unable to handle page fault for address: ffff887f9732ffff #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 6019 Comm: syz-executor.5 Not tainted 5.6.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:is_multicast_ether_addr_64bits include/linux/etherdevice.h:135 [inline] RIP: 0010:netif_receive_generic_xdp+0x566/0x11d0 net/core/dev.c:4565 Code: 74 08 48 89 df e8 ba f3 49 fb 4c 89 33 48 8b 9d 60 ff ff ff 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 fa f2 49 fb <48> 8b 33 83 e6 01 31 ff 48 89 b5 f0 fe ff ff e8 f6 d0 0c fb 48 89 RSP: 0018:ffffc9000847f958 EFLAGS: 00010246 RAX: 1ffff10ff2e65fff RBX: ffff887f9732ffff RCX: 0000000000000100 RDX: ffff8880a7245430 RSI: 000000000000042b RDI: ffffc9000847fa88 RBP: ffffc9000847fa78 R08: ffffffff866a3083 R09: ffffed1012e6405d R10: ffffed1012e6405d R11: 0000000000000000 R12: ffff8880a7245488 R13: ffff8880a72453c0 R14: ffff888097320000 R15: dffffc0000000000 FS: 00007f6af006a700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff887f9732ffff CR3: 0000000098ee4000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_xdp_generic+0x39/0x110 net/core/dev.c:4663 tun_get_user+0x1d9d/0x37d0 drivers/net/tun.c:1935 tun_chr_write_iter+0xac/0x130 drivers/net/tun.c:2026 do_iter_readv_writev+0x651/0x8e0 include/linux/fs.h:1895 do_iter_write+0x180/0x590 fs/read_write.c:998 vfs_writev fs/read_write.c:1071 [inline] do_writev+0x239/0x490 fs/read_write.c:1114 __do_sys_writev fs/read_write.c:1187 [inline] __se_sys_writev fs/read_write.c:1184 [inline] __x64_sys_writev+0x7d/0x90 fs/read_write.c:1184 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c581 Code: 75 14 b8 14 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 e4 b7 fb ff c3 48 83 ec 08 e8 fa 2c 00 00 48 89 04 24 b8 14 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 43 2d 00 00 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007f6af0069ba0 EFLAGS: 00000293 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 000000000000004e RCX: 000000000045c581 RDX: 0000000000000001 RSI: 00007f6af0069c00 RDI: 00000000000000f0 RBP: 000000000076bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00000000ffffffff R13: 0000000000000b7c R14: 00000000004cd906 R15: 000000000076bfd4 Modules linked in: CR2: ffff887f9732ffff ---[ end trace 9c3f651608ec6694 ]--- RIP: 0010:is_multicast_ether_addr_64bits include/linux/etherdevice.h:135 [inline] RIP: 0010:netif_receive_generic_xdp+0x566/0x11d0 net/core/dev.c:4565 Code: 74 08 48 89 df e8 ba f3 49 fb 4c 89 33 48 8b 9d 60 ff ff ff 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 fa f2 49 fb <48> 8b 33 83 e6 01 31 ff 48 89 b5 f0 fe ff ff e8 f6 d0 0c fb 48 89 RSP: 0018:ffffc9000847f958 EFLAGS: 00010246 RAX: 1ffff10ff2e65fff RBX: ffff887f9732ffff RCX: 0000000000000100 RDX: ffff8880a7245430 RSI: 000000000000042b RDI: ffffc9000847fa88 RBP: ffffc9000847fa78 R08: ffffffff866a3083 R09: ffffed1012e6405d R10: ffffed1012e6405d R11: 0000000000000000 R12: ffff8880a7245488 R13: ffff8880a72453c0 R14: ffff888097320000 R15: dffffc0000000000 FS: 00007f6af006a700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff887f9732ffff CR3: 0000000098ee4000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400